PROBLEM TO BE SOLVED: To provide an in-cabin noise control device for reducing noise by a stationary wave generated in a cabin, and reducing residual noise irrespective of a place in a cabin.;SOLUTION: An in-cabin noise control device 1 includes one or more microphones 21 and 22 for detecting noise in a cabin, two loudspeakers 31 and 32 provided opposed to each other so that an occupant is positioned between them in the cabin, and a control part 4 for measuring a noise signal from the microphones and driving each loudspeaker. One or a plurality of frequencies of the stationary wave generated in the cabin, and the position and distance of each loudspeaker in the cabin are set in the control part beforehand. When a difference between the frequency of the noise signal detected by the microphones and the frequency of the stationary wave is within a predetermined range, the control part causes the opposed loudspeakers to output a sound wave of the same frequency as the frequency of the stationary wave and of the reverse phase based on the position of each loudspeaker in the cabin, and the distance between the loudspeakers.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT
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